Search for dissertations about: "Visual ecology"
Showing result 11 - 15 of 41 swedish dissertations containing the words Visual ecology.
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11. How the sensory ecology of the bumblebee affects their functional traits
Abstract : Morphological traits are important for trait-based ecological studies as they allow for the prediction of biodiversity across the biosphere. Currently, the predictive power of trait-based ecology is not often applied to terrestrial arthropods, even though they provide us with important agricultural, ecological, and cultural value. READ MORE
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12. Visual ecology of insect superposition eyes
Abstract : In the superposition compound eye each rhabdom (light sensitive unit) receives light through many ommatidial facets, while in the apposition compound eye every rhabdom receives light from a single facet. The superposition design increases photon capture, which is an advantage in dark environments. READ MORE
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13. Sexual selection in Pomatoschistus – nests, sperm competition, and paternal care
Abstract : Sexual selection arises through variation in reproductive success. This thesis investigates different aspects important in sexual selection, namely nest building, sperm competition, paternity and paternal care, and their mutual interrelationships. READ MORE
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14. Piscivore-prey fish interactions - consequences of changing optical environment
Abstract : Predator-prey interactions are a primary structuring force in aquatic systems. A change in the predator-prey interactions may cause a change in the strength of trophic cascades and even resulting in ecosystem shifts. READ MORE
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15. Losing track of time : causes and solutions for the problematic determination of Baltic cod age
Abstract : Age is a fundamental parameter in biology and fishery science to estimate growth and population parameters. Losing track of time, in the sense of lacking reliable estimates of age and growth creates substantial problems for managing difficult-to-age-species. This thesis explores the use of fish otolith chemistry to improve age determination. READ MORE